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O Level Biology e-Book's MCQs - Complete

Facts about Smoking Quiz App & e-Book Download - 405

MCQ:

Excess mucus is produced causing smokers cough due to

  1. nicotine
  2. tar
  3. Irritants
  4. morphine

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Facts about Smoking App (Android & iOS)

Facts about Smoking App (Android & iOS)

O Level Biology App (Android & iOS)

O Level Biology App (iOS & Android)

SAT Biology App (Android & iOS)

SAT Biology App (Android & iOS)

9th Grade Biology App (Android & iOS)

9th Grade Biology App (iOS & Android)